Dandy roll construction



March 2, 1943. J. A. SPENCER 2,312,678

.. DANDY ROLL CONSTRUCTION Filed Ma 5, 1941 a I) I Patented Mar. 2, 1943 DANDY ROLL CONSTRUCTION John A. Spencer, South Hadley Falls, Mass., as-

signor to H. M. Spencer, Inc., South Hadley Falls, Mass, a corporation of Massachusetts Application May 5, 1941, Serial No. 391,929

8 Claims.

This invention relates to improvements in dandy roll construction.

It is one of the principal objects of the invention to provide a dandy roll construction including a novel shell or cover member that is yieldable to some extent relative to a support.

A still further object of the invention is the provision of a dandy roll construction including a frame or support and covering therefor wherein the cover or shell is permanently united to the frame. This makes for firmness and strength without impairing the desired flexibility thereof.

By reason of the special construction about to be described, it is particularly easy to obtain successful results in the manufacture of so-called laid paper. That is to say, the roll covering is composed primarily of a plurality of wires arranged in a certain way to permit various desired designs to be formed in the paper. Preferably, too, the arrangement is such that relatively thin papers, such as cigarette papers, can be made with satisfaction.

As a special feature of the invention, there may be an outer or cover member of screen-like construction so associated with a core or frame member as to be capable of flexing relative thereto to a desired degree. In other words, the cover may be said to be larger in diameter than the core or frame members so that the surface of the roll is yieldable relative to the core or frame. This is desirable so that the rolls surface accommodates itself to the Wire or paper Web thereon and provides a contact all across the wire. Also the contact may be said to be wider than would be the case, with a hard or non-yieldable surface.

The roll of this invention may be said to resemble a pneumatic tire which yields to conform to the roadway, as distinguished from a hard rubber tire which is less yieldable and does not conform to the same extent.

With the foregoing and various other novel features and advantages and other objects of my invention as will become more apparent as the description proceeds, the invention consists in certain novel features of construction and in the combination and arrangement of parts as will be hereinafter more particularly pointed out in the claims hereunto annexed and more fully described and referred to in connection with the accompanying drawing wherein:

Fig. 1 is a plan view of a frame or support member for use in the dandy roll constructi'o of the invention;

Fig. 2 is an edge view of one of the head members of the dandy roll;

Fig. 3 is a plan view of the screen or covering for the dandy roll;

Fig. 4 is a partial enlarged cross-sectional view to show certain features of construction;

Fig. 5 is a sectional view at a large scale taken at one end of the roll; and

Fig. 6 is a small scale more or less diagrammatic plan view of a complete roll.

Referring now to the drawing more in detail, the invention will be fully described.

Heads 2 and 4 are provided with shafts or journals B and 8 for rotatably supporting the dandy roll in the usual dandy stands or the like. Each said head is provided with a peripheral ledge such as 2' and 4'.

A plurality of longitudinal rods i 0 are disposed around and secured to an inner cage which may be formed by one or more members l2 arranged in helical fashion. The member l2 preferably consists of a narrow and rather thin strip bent into the form of a helix or spiral and the rods are secured to the periphery of the convolutions thereof by soldering, brazing or the like. Various materials may be used such as brass, brass compositions and bronze, they having been found to be suitable.

There may be as many rods 82 as may be desired and the turns of the cage may have other rods passing therethrough and secured thereto, if desired.

There are preferably one or so turns as I l at opposite ends of the cage that are arranged for abutting the heads while the ends of the rods [0 project outwardly therefrom, as at H, for engaging the parts 2' and 4' of the heads 2 and 4.

The rod ends H at one end of the cage are secured to one of the heads such as to the part 2' of head 2. This may be accomplished by soldering or brazing so that the support formed by the cage and rods and one head are securely fixed together.

A plurality of rings I8 are provided which with other elements to be described constitute the dandy roll cover.

The rings 18 are preferably of relatively thi metal and longitudinal rods 20 in any arrangement pass therethrough and are secured in place by soldering or the like.

The central openings in the rings are such that the secured together rings and rods may be slipped over the rods in of the support associated with the head.

The outer-peripheries of the rings [8 are provlded with a plurality of spaced small holes I9 the outer edges of which are quite close to the outer periphery of the rings. These holes receive very small longitudinal wire elements having a diameter of a few thousandths of an inch.

There may be any desired arrangement of the rods 20 and some of them may extend angularly relative to the rings l8. Likewise there may be rods other than those cage rods that extend angularly of those rods. Also there may be rods such as 22 extending between the end turns I4 of the cage.

The rings l8 with the associated rods 20 are slipped over the cage rods to so that an endmost ring such as 24 abuts header 2. Then the header 4 is located at the other end with the ends of the rods I0 disposed on the part 4 of the head 4 and with the end turn I4 of the cage and endmost ring 25 against said head. The ends ll of rods l0 and end ring 25 are secured as by soldering or the like to head 4.

The structure, as described, consists of the inner cage, outer rings 18, rods 20 and heads 2 and 4.

Wires W are then passed through the openings IS in the rings IS SO as to overlie the peripheries of the headers 2 and 4 and are suitably tensioned after which the end portions of the wires are soldered to the headers.

There is provided an outer surface for the roll which consists of longitudinally spaced peripheral edges of the rings [8 and a multitude of closely spaced very small longitudinally extending wire elements W.

The openings in the rings are slightlylarger in diameter than the overall diameter of the rods IU of the support. As an example there may be a difference in diameter of thirty thousandths of an inch or thereabouts. This makes it possible for the outer surface of the roll to yield slightly which is desired.

The yieldability may beprovided all along the roll or at any point or points therealong. Otherwise the inner portion of a ring I8 or rings may be secured to the rods III by soldering to eliminate yieldability at such point or points.

Also it may be desirable to provide a clip or clips such as 40 in Fig. 4 that are-soldered to a ring or rings which have slots such as 42 embracing rods I0. These prevent relative rotation of the covering and support.

The invention may be embodied in otherspecific forms without departing from the essential characteristics thereof. Hence, the present embodiments are therefore tobe considered in'all respects merely as being illustrativea nd not as being restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoingdescription, and all modifications and variations as fall within the meaning and purview and range of equivalency of the appended claims are therefore intended tobe em: braced therein. i

What it is desired to claim and secure by Letters Patent of the United States is:

1. A dandy roll comprising in combination, a support including spaced headers and a plurality of circumferentially spaced longitudinally extending members therebetween, and a cover including a plurality of longitudinally spaced rings on the longitudinally extending members of the support having circumferentially spaced openings adjacent their peripheries and a plurality of wire elements extending longitudinally, of the support through said openings having opposite ends secured to said headers.

'2. A dandy roll comprising in combination, a support including spaced headers and a plural- {ity of circumferentially spaced longitudinally extending members therebetween, and a cover including a plurality of longitudinally spaced rings on the longitudinally extending members of the support having circumferentially spaced openings adjacent their peripheries and a plurality of wire elements extending longitudinally of the support through said openings secured to said rings and having opposite ends secured to said headers, the inner diameter of said rings being slightly larger than the diameter of the support over said rods whereby the cover is yieldable relative to said support.

3. A dandy roll comprising in combination, a support including spaced headers and a plurality of circumferentially spaced longitudinally extending members therebetween, and a cover including a plurality of longitudinally spaced rings on the longitudinally extending members of the support having circumferentially spaced openings adjacent their peripheries and a plurality of wire elements extending longitudinally of the support through said openings having opposite ends secured to said headers, the inner'diameter of said rings being slightly larger than the diameter of the support over said rods, and means associated with said support and cover to prevent relative rotation of said cover andsup port. A

4. A dandy .roll comprising in combination, a support including spaced headers and a plurality of circumferentially spaced longitudinally extending members therebetween, and a cover including a plurality of rings on the longitudinally extending members of the support spaced therealong with endmost rings against said headers, said rings provided with circumferentially spaced openings adjacent the peripheries thereof and a plurality of wire element extending therethrough secured to said rings and with the ends thereof and said endmost rings and head ers secured together.

5. A dandy roll comprising in combination, end headers and circumferentially spaced longitudinally extending members secured at opposite ends to the headers spacing them apart, a plurality of annulus shaped members on said longitudinally extending members spaced therealong with the endmost members thereof abutting the headers and provided with circumferen tially spaced openings adjacent the peripheries thereof, and a plurality of wire elements extending through said openings and secured. to said members, the ends of said elements, endmost annular members and headers being secured together and the said annular members being slightly shiftable radially of the circumferentially spaced longitudinal members.

6. A dandy roll comprising in combination, end headers and circumferentially spaced longitudi nally extending members secured at opposite ends to the headers spacing them apart, a plurality of annulus shaped members on said longitudinally extending members spaced therealong with the endmost members thereof abutting the headers and provided with circumferentially spaced openings adjacent the peripheries thereof, a plurality of wire elements extending through said openings and secured to said members, the ends of saidelements, endmost annular members and headers being secured togetherand the said annular members being slightly shiftable radially of the circumferentially spaced longitudinal members, and certain of said annular members having means to prevent circumferential shifting thereof relative to said longitudinal members.

7. A unitary cover for slipping axially onto a dandy roll having end headers connected bylcircumferentially spaced longitudinal members comprising, a plurality of spaced relatively thin annulus members provided with openings and longitudinally extending rods in said openings secured to said members to hold the members in spaced relation, the said members provided with circumferentially spaced openings adjacent their peripheries, and a plurality of wire elements extending through the openings secured to said members.

8. A unitary cover for slipping axially onto a dandy roll having end headers connected by circumferentially spaced longitudinal members comprising, a plurality of spaced relatively thin annulus members provided with openings and longitudinally extending rods in said openings secured to said members to hold the members in spaced relation, the said members provided with circumferentially spaced openings adjacent their peripheries, and a plurality of wire, elements extending through the openings secured to said members, the ends of said elements projecting outwardly beyond the endmost annulus members for securing to the end headers of a dandy roll.

JOHN A. SPENCER. 

